emrg: fix GUI file-browser vertical scroll + root collapse (rants 12:46/12:47)

Agent.md

@@ -85,7 +85,7 @@ Usage: say "tool loop" for the whole process, "round N" for a single LLM request
   - Streaming chat with delta rendering (16ms batching), markdown on done (marked + DOMPurify + local highlight.js subset), tool call status cards (2000-char truncation + expand)
   - Session list/switch/new/delete + right-click rename (context menu, #423) synced with daemon; own-stream busy lock (G65); broadcast streams from other clients tagged "来自其他客户端"
   - Disconnect/reconnect: red status dot, auto daemon respawn (stale-port detection), session resume, input bar restored on disconnect (no 30s fake-timeout)
-  - Unit tests `npm test` (229: 44 daemon_client + 19 conn-manager + 22 app-commands + 107 renderer smoke + 15 i18n + 7 integration + 3 commands + 5 build-config + 7 gui-state); RESPONSE_TYPES mirror daemon protocol verified against `daemon.py`
+  - Unit tests `npm test` (231: 44 daemon_client + 19 conn-manager + 22 app-commands + 109 renderer smoke + 15 i18n + 7 integration + 3 commands + 5 build-config + 7 gui-state); RESPONSE_TYPES mirror daemon protocol verified against `daemon.py`
 - **Scheduled tasks** — Task generalization + CRUD (rant 2026-08-12T18:23:15, #709/#710/#711)
   - Task handler generalized: `TaskHandler` (renamed from `EvolutionHandler`), repo-configured self-heal for any project, template lookup builtin → `~/.emrg/task-templates/<name>.md` → fallback
   - Daemon commands: `task_create/update/delete` + `task_template_create/list/update/delete` (tasks stored in `~/.emrg/tasks.yml`, custom type templates in `~/.emrg/task-templates/`)
@@ -119,7 +119,7 @@ pkill -f "emrg.server"; rm -f ~/.emrg/emrgd.port; python -m emrg
 ```
 
 Python: `uv run pytest tests/ -v` (761) — import check: `uv run python -c "from emrg.client.app import run_client"`
-GUI: `cd emrg/gui && npm test` (229: 44 daemon_client + 19 conn-manager + 22 app-commands + 107 renderer smoke + 15 i18n + 7 integration + 3 commands + 5 build-config + 7 gui-state) — syntax: `node --check main.js preload.js daemon_client.js renderer/js/*.js`
+GUI: `cd emrg/gui && npm test` (231: 44 daemon_client + 19 conn-manager + 22 app-commands + 109 renderer smoke + 15 i18n + 7 integration + 3 commands + 5 build-config + 7 gui-state) — syntax: `node --check main.js preload.js daemon_client.js renderer/js/*.js`
 CI: `uv run pytest` (ubuntu + **windows-2025 matrix** — Windows pytest 回归在 PR CI 即失败，v0.2.29 教训 #725) + GUI tests + **actionlint workflow lint** (`rhysd/actionlint@v1.7.12` gate, #444 — workflow 解析错误在 PR CI 即失败，如 `if:` secrets 上下文)
 Re-trigger: `scripts/re-trigger-ci.sh [branch]` (workflow_dispatch, #527 — 替代空 commit 重触发：Actions outage 会整段丢弃 push 事件，dispatch 走 API 路径不受影响)
 

emrg/gui/renderer/css/layout.css

@@ -465,6 +465,10 @@ body.sidebar-collapsed #app {
 
 /* ── P3.1：文件浏览器（懒加载目录树，VS Code 风格 rant 2026-08-12T17:28:19） ── */
 .result-files {
+  /* flex:1 + min-height:0（rant 2026-08-13T12:46:12）：flex 子项默认 flex:0 1 auto 高度随内容
+     增长永不压缩进容器 → overflow-y:auto 永不触发（有滚动条槽但滚不动）；与 .result-list 对齐 */
+  flex: 1;
+  min-height: 0;
   overflow-y: auto;
   /* 滚动条 hover 显示（VS Code 行为：平时隐藏，移入文件树区域显示） */
   scrollbar-width: thin;

emrg/gui/renderer/js/file-tree.js

@@ -203,9 +203,16 @@ const FileTree = (() => {
     rootRow.appendChild(rootHead);
     const kids = el("div", { class: "ft-kids" });
     rootRow.appendChild(kids);
+    // 根目录行与普通目录行一致的可展开/收起（rant 2026-08-13T12:47:18：render() 手写根行漏绑
+    // click → 点击根目录无反应永远展开；toggleDir 已负责 expanded Map 持久 + 图标切换）
+    const st = ensure(root);
+    rootRow.addEventListener("click", (e) => {
+      if (e && e.stopPropagation) e.stopPropagation();
+      toggleDir(root, kids, st, 1);
+    });
     c.appendChild(rootRow);
     // 根自动展开（fire-and-forget；根子项 depth=1）
-    expandDir(root, kids, ensure(root), 1);
+    expandDir(root, kids, st, 1);
   }
 
   return { setRoot, setSession };

emrg/gui/test/renderer.smoke.test.js

@@ -1369,6 +1369,34 @@ test("P3.5（rant 17:28）：展开态持久 + 滚动条 hover 样式（CSS 源
   assert.ok(tabsIdx < tabbarIdx && tabbarIdx < toggleIdx, "tabbar 应嵌套在 result-tabs 内（同排），旧布局 toggle 在 tabbar 之前");
 });
 
+test("P3.5（rant 2026-08-13T12:46:12）：.result-files 滚动 CSS flex:1 + min-height:0", async () => {
+  // #result-panel 是 flex column；.result-list 有 flex:1 所以滚动正常，.result-files 缺 flex:1/min-height:0
+  // → 高度随内容增长永不压缩，overflow-y:auto 永不触发（有滚动条槽但滚不动）
+  const css = fs.readFileSync(path.join(RENDERER_CSS, "layout.css"), "utf8").replace(/\n/g, " ");
+  const m = css.match(/\.result-files\s*\{([^}]*)\}/);
+  assert.ok(m, ".result-files 规则存在");
+  assert.ok(/flex:\s*1/.test(m[1]), ".result-files 应 flex:1（对齐 .result-list）");
+  assert.ok(/min-height:\s*0/.test(m[1]), ".result-files 应 min-height:0（允许压缩触发滚动）");
+  assert.ok(/overflow-y:\s*auto/.test(m[1]), ".result-files 保留 overflow-y:auto");
+});
+
+test("P3.5（rant 2026-08-13T12:47:18）：根目录行可收起/展开", async () => {
+  const { ctx, els } = makeSandbox();
+  await tick();
+  await vm.runInContext('FileTree.setSession("s1", "/proj")', ctx);
+  await tick();
+  const rootRow = els["result-files"].querySelectorAll(".ft-root")[0];
+  assert.ok(rootRow, "根目录行存在");
+  const kids = rootRow.querySelector(".ft-kids");
+  assert.ok(kids, "根目录 kids 容器存在");
+  assert.ok(!kids.classList.contains("hidden"), "默认展开（ft-kids 无 hidden）");
+  rootRow.dispatch("click", { stopPropagation() {} });
+  assert.ok(kids.classList.contains("hidden"), "点击根目录应收起");
+  rootRow.dispatch("click", { stopPropagation() {} });
+  await tick();
+  assert.ok(!kids.classList.contains("hidden"), "再次点击应展开");
+});
+
 test("工具调用上限中断 → 系统提示可继续（对齐 TUI，跨项目教训）", async () => {
   const { ctx, els } = makeSandbox({});
   await tick();